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Marathon Calendar Ontario 2025-2026

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Explore the best marathons in Ontario for 2025-2026! Our updated list features 14 exciting races across the region. Find your next race in Ontario below and join the running community at these great events!

October 2025
Oct
26
Sunday

Niagara Falls Marathon

5 km 10 km Half Marathon Marathon
November 2025
Nov
1
Saturday

Hamilton Marathon Road2Hope

5 km 10 km Half Marathon Marathon
February 2026
Feb
15
Sunday

Embrace Winter Run

3 km 5 km ... Half Marathon Marathon
April 2026
Apr
26
Sunday

Beneva Mississauga Marathon

5 km 10 km Marathon
May 2026
May
3
Sunday

Spring Fling Marathon

5 km 10 km Half Marathon Marathon
May
3
Sunday

Toronto Marathon

5 km 10 km Half Marathon Marathon
May
23-24
Sa - Su

Tamarack Ottawa Race Weekend

5 km 10 km Half Marathon Marathon
June 2026
Jun
20
Saturday

Community Strong Race

5 km 10 km ... 6 hr 8 hr
July 2026
Jul
4
Saturday

The Limberlost Challenge

Trail Run 7 km 14 km ... Marathon 56 km
Jul
18-19
Sa - Su

Xterra Conquer the Crater

Trail Run 3 km 5 km ... Half Marathon Marathon
August 2026
Aug
8
Saturday

Falling Water Trail Marathon

Trail Run Half Marathon Marathon
Aug
9
Sunday

The ENDURrun

Trail Run 10 km 15 km ... 30 km Marathon
October 2026
Oct
4
Sunday

The County Marathon

5 km Half Marathon Marathon
Oct
17-18
Sa - Su

Toronto Waterfront Marathon

5 km Half Marathon Marathon
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